Underweight

If you are persecuted by being underweight and nothing helps, then it's very likely that you can be helped. Similarly, underweight can occur in all those people who are possessed by a ghost which for various reasons had a problem with being underweight. This could be caused by exaggerated spiritual asceticism in its life, or by a disease leading to loss of weight to which the ghost fell victim during its life. Underweight is, of course, not caused by possession in all cases.